I looked again the game in which AlphaZero sacrifices a knight on h6.
I donít believe this is brute force calculation so it makes what AlphaZero did even more impressive!

I viewed the game in question, and felt AlphaZero's play was almost Paul Morphy like in style. Beautiful play resulting in wonderful game to behold.

Indeed. Those games have so many test positions which are very deep.
One of them is the following,

[d]r2q1rk1/pb1nbppp/2p1p3/1p2P3/1PpPN1Q1/2B3P1/P4PBP/R4RK1 w - - 6 17

After 16...Nd7 of black, it is almost impossible for top engines to consider 17.Nc5 because
the Ne4 is already well placed and should not be exchanged.

But the idea by AlphaZero is very deep, this Nc5 move would trap the light-square Bishop
of black and will require a lot of time to free up, but wasn't freed up even until the end of the
game. It remained hemmed in to its own pawns.

So in my opinion, this 17.Nc5!! move is a very deep positional move which was understood
by AlphaZero, but not by current top engines. Because why would current engines exchange
a well placed piece?